Launching MVP in hard tech?

Hello community, this is my first post here, really excited to become part of this :-) Short intro: An experienced hardware engineer, mostly in the defense/aerospace industry, taking a plunge into the entrepreneurship world. Soon will be able to launch my first MVP and start learning/iterating...learning is my passion I'm curious how many of the founders here are from hard tech? Wondering what the ways are most suitable to launch at the MVP level once talking about physical tech products? Will appreciate hearing your insights